paris climate treaty

The G20 Summit ended in Hamburg with affirmation to pursue the Paris climate accord by leaders of the world's strongest economies, minus President Trump.

"The leaders of the other G20 members state that the Paris Agreement is irreversible," reads a declaration adopted on the final day of meetings Saturday, by a group that includes Britain, France, Germany, Russia and China, and which some are now calling the "G19," at least when it comes to the question of climate change.

Police used water cannons and pepper spray to try to push back protesters who threw bottles, bricks and stones on Thursday ahead of the Group of 20 summit in Hamburg, Germany, according to The Associated Press.

Some demonstrators wearing black hoods broke a police vehicle's window.

President Trump's Twitter account may be popular among his fans at home, but his latest missives are complicating the work of American diplomats overseas. As some diplomats push back, State Department spokeswoman Heather Nauert cautions that they "are expected to use their judgment."

Consider Trump's personal attack on London's mayor, Sadiq Khan, after Saturday night's deadly terrorist attack in the British capital.

President Trump announced Thursday that the U.S. will leave the Paris climate deal.

Here are five things that could be affected by the decision.

1. The coal industry

Even coal companies had lobbied the Trump administration to stay in the agreement.

Editor's Note: This story was originally published in December 2015 and was republished with minor updates ahead of President Trump's decision to pull the U.S. out of the Paris climate agreement. Some of the information on approval by individual governments has been changed to reflect changes in status.

Updated at 5:45 p.m. ET

President Trump has announced that the U.S. will be withdrawing from the Paris accord — the historic global agreement reached by 195 countries in 2015 to set targets for reducing greenhouse gas emissions and limiting the rise in average global temperatures.

President Trump is nearing a decision on whether to formally withdraw the U.S. from the Paris climate agreement — a landmark deal in which nearly every country volunteered to curb its greenhouse gas emissions in an effort to limit global warming.

President Trump is expected to face pressure from European Union leaders at the G-7 summit in Italy next week to keep the U.S. in the Paris Climate Treaty.